coondoggie writes: "It has been 50 years since the only prisoners to escape the US Penitentiary Alcatraz in San Francisco pulled off one of the most legendary unsolved crimes in American history. Still 50 years later the US Marshals Service says it remains "diligent in the manhunt for Frank Morris and brothers Clarence and John Anglin as they are the only men to escape from Alcatraz Island in San Francisco who remain unaccounted for."

"No matter where the leads take us, or how many man hours are spent on this historic case, the Marshals Service will continue to investigate to the fullest extent possible," said David Harlow, assistant director, U.S. Marshals Investigative Operations Division in a statement."Link to Original Source